they include. Describe each using examples and explain why they are used in a succinct manner. Is it possible to use the same

In terms of security, what's the difference between authenticating a message and authenticating an entity?

Why are authorization lists so vulnerable to the unauthorised modification that they need to be encrypted and protected? What kind of damage might occur if these files are altered in an unanticipated or unexpected manner?

Suppose Alice has a message that she is ready to send to anyone who asks. Thousands of people want to obtain Alice's message, but each wants to be sure of the integrity of the message. In this context, do you think a MAC-based or a digital-signature-based integrity scheme more suitable? Why?

How may block and stream ciphers exchange keys, and why should they be different?

Step-by-step instructions for implementing native authentication and authorization services when a web client seeks access to restricted resources on a web server. Please provide the top two arguments in favor of using layered protocols. Justify your claims using appropriate illustrations.

There can be more than one file movement on a single link. Thank you for telling me how long it takes to clear customs. Which delay can't be changed and which can?

The tripwire program is an example of a host-based intrusion detection system. This tool examines files and folders on the system and notifies the administrator of any changes. It employs a protected database of cryptographic checksums for each file reviewed and compares them as they are scanned. It must be set with a list of files and directories to check and changes allowed. It can allow adding new entries to log files but not changing old ones. What are the benefits and drawbacks of employing such a tool? Consider the issue of selecting which files should be checked and which should be reviewed rarely. Consider the time spent configuring the application and monitoring the results.

Specifically, how are block ciphers different from stream ciphers? Please provide three differences and an explanation for each.

What specific differences exist between block ciphers and stream ciphers? Please list three distinctions and explain each one.